gaasedelen/patching

Mainly a servicing release, details below: ``` + Changes |- IDA 9.0 compatibility via PR #21 |- Fixed keystone bug which could cause IDA to hang indefinitely on certain inputs |- Improved highlight calculation which was causing IDA to lag near large items |- Restored patch program alt shortcuts via PR #12 |- Fixed issue where bytes patched outside of the dialog were not highlighted |- Updated selection behavior to allow reverting individual instructions in IDA view |- Added warning to prevent auto-install into incompatible versions of IDA / Python ```

Removes use of PEP515 numeric literal to support older versions of Python 3

Hotfixes issue with easy install so that plugin will now fully load immediately if an IDB is already open

Initial plugin release. Download the distributable plugin package for your platform and extract its contents into your IDA user plugins directory.